Valve device.



uly 27, 1909.

2 BHEETS-SHEET 1.

Patented J J. McGILLIVRAYL VALVE DEVICE.

m J J M W 1M fl /////////////Z 6 I APPLICATION FILED MAR. 17, 1909. 929,238.

J. MGGILLIVRAY. VALVE DEVICE.

APPLICATION FILED MAR. 17, 1909.

Patented July 27, 1909.

jwenibr: I

' J jfl mm JAMES MCGILLIVRAY, OF SQUTH CHICAGO, ILLINOIS.

vALvE DEVICE.

Specification of Letters Patent.

Patented July 27, 1909.

Application filed March 17, 1909. Serial No. 484,053.

To all whom it may concern: i

Be it known that I, JAMES MoGILLIvR-AY, a citizen of the United States, residingat South Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Valve Devices, of

' which the following is a specification.

My present invention is in the nature of an improvement, on the valve-device ,which forms the subject of Letters Patent No; 781,897 granted to me on the 7th day-.of

February, 1905, that construction being where such lower i, to lprovide ,a construction of v moreespecially adapted for controlling highressuressay 1500 pounds to the s .uare inch, and over and to that end invo ving a pair of similar hollow rotary valves bal anced by the admission of counter-pressureto their interiors through by-passes, and con nected together by operating means to adapt them to be simultaneously actuated.

The primary object of my im rovement is al a-device inving alsingle hollow valve and adapted for controlling relatively lower pressures, thereby enabling an equally effective, but cheaper, device to be furnished to users be controlled; c

In the accompanyingfdrawin s, Figure 1 a view in vertical sectional e evation of a valve-d evice I of (my, mproved construction;

Fig. 2 is a artly-broken top'plan view of the same, and igs, 3, 4and'5 are-sections, taken, respectively, on thelines A-A, 'B-B, and OC, Fig. 1.

The casing 6, which is'o en at one end and closed at its opposite en isprovided with diametrically-opposite ports 7 and 8, shown as internally-threaded nozzles, respectively near the opposite ends of the casing, for coupling with one, as the'nozz1e-7, a pressureinlet pi e and with the other, as the nozzle 8,

an out et-pipe; and in the plane between these ports, ut at a right-angle thereto, the casing is provided with a nozzle-like port 9.

Each nozzle has formed upon it, near its outer end, a flange 10 through which to secure it to a similar flange on the pipe (not shown) to which it is coupled. The lIllK-JIIPI of the casing is slightly tapered toward its closed end to be fitted by a correspondinglytapered hollow rotary valve 11, carrying a .stem 12 on its outer, closed end, and closed at its opposite end by a screwlug 13 at which it is adjustably supporter by a setscrew 14 working in the ad acent end of the pressures are required to casing. I A threaded collar 15 is screwed into the casing about the valve-stem 12 to-confine it, and beyond-the collar that stem is shouldered, as} shown, for seating about it the socket-e nd of an operating-handle 16 sevalve-stem onoppos'ite posts 19 screwed into' V cu'red in lace bv a set-screw 17 through the nv Q ears 20 which pro ect laterally from the'open end of the casing," these, posts being surrounded by spacing-thiinbles 21; and the bar 18 afl'ords a bearing for a set-screw 14? working centrally against the end of the valvestem, whereby any wear on the. valve and the casing may be taken up, on loosening the set-screw 14, by operating the set-screw14 to properly seat the valve in its casing.

, In the valve is a port 22 toregister with theinlet-port 7 ,a port 23 and at a ri ht-angle thereto a ort 24130 register with t e port 9 and the va We also contains aport 25 to register-with the port 8, In the position of the valve represented in Fi .21 the pressure-medium enters it through t passes through the charges through the ports 23 and 9 to the ports 7 and 22 andv ollow valve to and dis-' point where it performs work. Upon turn-" mg the valve through a quarter-turn, the port 22 is-taken out of registration with the port 7 ,and the port 23 is taken out of registratioriQwith the ort 9, while the ports 24 and 25 are broug t coincident, respectively,"

with-the ports 9 and 8, thereby shutting oil the pressure supply to the" valve and permit ting the pressure to return from the point of performing its work and discharge through the orts 9 and 24- into the valve and out of the Patter through the orts 25 and 8.

In the inner wall of t ecasing is provided, at aipoint diametrically opposite the port 7, a pocket 26, the area of which corresponds, at least approximately, with that of said port, and which is connected therewith by a circular, (or, as shown, semi-circular) recess 27 "formed about the valve. and 29 are formed in the inner wall of the casing in positions at right-angles to each other in the plane of the discharge and return port 9, with which each corresponds, at least approximately, in area; and they are connected by a circular recess 30 formed about the valve. These pockets are provided for balancing the valve to prevent binding thereof under the pressure-force exerted against it, and thus render the more easy its opera- Similar pockets 28 tion by turnin the .hand1e16.- Thus ',iwith' the ports 7an 22in registration, the. pres-v sure-medium fills the pocket 26; through the recess 27; and, both ports bein of the same thepoc et'28andalso'thepocket29,thereby ports 23 an balancing the valve'in :the -;direction transversely of the'port 9,:and alsoagainstithe;

back-pressure from the: work and when the port '24 registers-withthe portB, topermlt the return-flow of ,the pressure-medium, ,itsfl pressure againstthe inner wall at [the rear part ofthe, valve-will'be balancedb :the

counterressure in the pocket29whic has entered y way ofthe recessr30. 'lThe-resist ance tothe (pr ssure,dischargingthroughthe 24, when closed,; r,enders'-such balancing desirable at the point 28, since otherwise. the pressure exerted against-the casing through the port 24 would tend tor bind the valve.

It should be remarked that the recesses 27 i and 30 are provided'in the valve forthe sake of convenience in manufacture, instead of being rovidedin theinner wall of;the;casing, w ichwould amount-to the same thing but render the manufacture more difficult.

What I claiinas new-andedesire-to secure by Letters Patent is 1. A balanced valve-device of the character described, comprising, incombination, a casing provided with an inlet-port and an outlet-port and'in-the plane betweenthe two,

with a discharge. and return port, pockets providedin the inner casin -wall relative to said inlet port andsaiddisc arge and return port, a ho low valve rotatably seating in the casing and containinga portto register with said inlet-port, a port to register with said outlet-port, ;and

and recesses extending about ,the valve for 9 of: the work being. erformed, renders desirable the balancingo the-valve at the point,2 9, and} the position of-theport .forth.

. 3. A-balanced valve-edeviceof the characcasing provided with can inwardl interior, .an inlet-port and an: out

orts to re ister succes- 'sively withsaid dlscharge an return port,

erating poo ets for the urposerset forth. 2. 'A' d alancedzvalva evice of the characterdescribed, comprising, in combination, a

casing provided on oppositesides and toward oppositeendsrespectively withan inlet-port cndan outlet port, and in the plane between and at righteanglesthereto with a discharge and return port, a pocket-formed in the cas, i'ngswall opposite.andcorresponding in area with the -1nletport,.similar pockets in: the casing-wallgrespectivcly opposite and at a :ri ht-eangleto. saiddischarge; and return port, 7 a* ollow valve rotatably seating in thecasing ;.and-containing-a port to-lregister with said .inlet-port apoi-tto register with said outlet- .;p.ort' and ports-toregister successively with said dischargeand return port, a recess ex- ,tendingabout the valve for connecting said inlet-portand pocket 0 positethereto, and a recess-raboutrthe valve orcormectingsaid revturn and discharge Iportandthe pockets cooperating vtherewit for the purpose set ter described, comprising, in combination, a .-tapering et-port in the casing and azidischargeand return port .thereiniin-the planebetweenthe two, nozzlelike extensions of said ports provided with .couplingeflangias,pocketsprovided inthe inner casin -wa ativeto saidinlet-port and said discharge; and return port, a hollow tapering handle-equipped valve rotatably and adjustably-seating 1n the casing and constaining a port'to registerjwithsaid inlet-port, Y

a port .to register with saidoutlet-port and ports to, register. successively with said dischar e andreturn port, .and recesses extending aiout the valve forconnecting said inletportand said. discharge and return art with their respectivelfy cooperating poc ets, for the purpose set orth.

JAMES MOGILLI'VRAY.

In presence of J G. ANDERSON, R. A. RAYMO D, 

